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Finding the Fourth Proportional to 200,351.76, 300,828.69 and 190,721.94

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Solution

The fourth proportional to 200,351.76, 300,828.69 and 190,721.94 is: 286,369.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,351.76 : 300,828.69 = 190,721.94 : x
  2. Step 2: Convert to fraction form
    200,351.76/300,828.69 = 190,721.94/x
  3. Step 3: Cross multiply
    200,351.76x = 300,828.69 × 190,721.94
  4. Step 4: Simplify right side
    200,351.76x = 57,374,631,364.46
  5. Step 5: Solve for x
    x = 57,374,631,364.46/200,351.76
  6. Step 6: Final answer
    x = 286,369.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.